I alreay hear cries in the crowd...
But I know what you mean, even if the Amvox II Black is one of the most appealing Amvox II.
A friend of mine has one, and he wears it quite often, since 2 years, now.
I wore his at Le Mans Race, while he wore mine.
I didn't notice any hint of weakness from the PVD, and what I heard is that LC can re do it in case of problem.
Best,
Nicolas